package cn.wolfcode.util;

import javax.servlet.http.HttpServletRequest;

/**
 * 获取客户端IP地址
 */
public class IPUtil {

    /**
     * 客户端真实IP地址的方法一：
     */
    public static String getRemortIP(HttpServletRequest request) {
        if (request.getHeader("x-forwarded-for") == null) {
            return request.getRemoteAddr();
        }
        return request.getHeader("x-forwarded-for");
    }
    /**
     * 客户端真实IP地址的方法二：
     */
    public static String getIpAddr(HttpServletRequest request) {
        String ip="";
        if(request!=null){
            ip = request.getHeader("x-forwarded-for");
            if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
                ip = request.getHeader("Proxy-Client-IP");
            }
            if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
                ip = request.getHeader("WL-Proxy-Client-IP");
            }
            if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
                ip = request.getRemoteAddr();
            }
        }
        return ip;
    }
}
